Where does the solar system end and interstellar space begin? That's a question scientists have been working to answer using ...

Voyager 1 and 2 crossed the heliopause and discovered a strange superheated boundary near the edge of the Sun’s influence.

Leaving the Solar System is not as simple as passing Pluto or crossing the heliopause. True escape means understanding the ...

Southwest Research Institute (SwRI) scientists are using a solar wind forecasting method combined with analytic and numerical heliosphere models to find out where the first plasma boundary of the ...

For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

Get ready. The human race is about to go Interstellar! Again…. On the heels of Voyager 1’s historic 2012 breakout from our solar system, its twin, Voyager 2, has begun to detect signs that it too may ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The solar system suddenly has a new member. A new object ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...